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In dicot stems, the cambium between xylem and phloem makes the vascular bundle

ABicollateral with two phloems
BOpen with secondary growth
CClosed without secondary growth
DRadial without any cambium
Answer & Solution
Correct answer: B. Open with secondary growth
Cambium present = OPEN vascular bundle = capable of secondary growth (dicot stems). Monocot stems lack cambium = CLOSED bundles, no secondary growth.
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